| 光具座测量透镜焦距的自动调焦方法研究 |
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| 引用本文： | 张伟,张晓辉,刘振江.光具座测量透镜焦距的自动调焦方法研究[J].应用光学,2002,23(6):25-28,35. |
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| 作者姓名： | 张伟 张晓辉 刘振江 |
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| 作者单位： | 中国科学院长春光学精密机械与物理研究所,吉林,长春,130021 |
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| 摘 要： | 在原来光具座测量透镜焦距的装置基础上 ,用 CCD代替人眼作接收器时 ,正确判定焦面是实验的关键。本文基于点扩散函数理论提出评定焦面的一种方法 ,并对这种方法进行理论分析。实验结果与理论分析相吻合。实验表明 ,该方法调焦精度可达到± 4 μm范围内 ,比目测精度提高了大约1.5μm。
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| 关 键 词： | 光具座 测量 透镜 焦距 自动调焦方法 线阵CCD 点扩散函数 光学系统 |
| 文章编号： | 1002-2082(2002)06-0025-05 |
| 收稿时间： | 2002/3/31 |
STUDY ON METHOD OF AUTOMATIC FOCALIZATION TO MEASURE FOCAL LENGTH OF LENS ON LIGHT-UTENSIL SEAT |
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| ZHANG Wei,ZHANG Xiao hui,LIU Zhen jiang.STUDY ON METHOD OF AUTOMATIC FOCALIZATION TO MEASURE FOCAL LENGTH OF LENS ON LIGHT-UTENSIL SEAT[J].Journal of Applied Optics,2002,23(6):25-28,35. |
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| Authors: | ZHANG Wei ZHANG Xiao hui LIU Zhen jiang |
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| Abstract: | Linear CCD is used as receiver on behalf of eyes on the basis of originally experimental equipment measuring the focal length of lens.The correct determination to the focal plane is the key of the experiment. A method which is based on the theory of point scatter function is put forward and analysed theoretically in this paper, and the analysis is proved with the results of the experiment.The results show that the focalizing precision of the method comes to ±4μm.Compared with the precision measured with eyes, it's about 1.5μm superiorty. |
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| Keywords: | focal length linear CCD point scatter function |
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